Hassan

Principle Engineer

Synergy Pakistan • Full-time

Sep 2025 - Present • 8 mos

• Architecting a multi-tenant AI-powered job auto-apply SaaS platform serving thousands of users, spanning a Next.js web client, TypeScript FeathersJS REST/SSE API, and Python Temporal worker services on PostgreSQL. • Designed and implemented scalable Temporal workflows in Python for per-user application pipelines, using deterministic workflow IDs for idempotency, signal-driven reactivity, and child workflows for isolated per-job retries. • Built Playwright-based browser automation at scale with rotating residential proxies and per-user concurrency control, automating ATS submissions across Greenhouse, Lever, and other job-application platforms. • Engineered an AI-powered question-answering pipeline using OpenAI and Anthropic Claude APIs to dynamically respond to job-application forms, with per-job resume tailoring and PDF generation. • Implemented JobBERT-v2 (1024-dim) embeddings for semantic job matching, integrated into the job-bank sync pipeline with PostgreSQL and pgvector for efficient retrieval. • Deployed services on Kubernetes via Helm with KEDA-based autoscaling (2→10 worker replicas), Server-Sent Events backed by Postgres LISTEN for real-time UI updates, and Stripe integration with audit logging and RBAC on the API.

AI / Full-Stack Engineer

AI Vision Clinic • Full-time

Jul 2024 - Sep 2025 • 1 yr 2 mos

• Implemented back-end services using Python frameworks including FastAPI and Flask, ensuring scalable and efficient processing pipelines. • Applied RAG frameworks such as LlamaIndex, Ollama, and LM Studio to improve context-aware information retrieval and response generation using Elasticsearch as the vector database. • Developed and integrated a real-time uploading metrics system using WebSockets for live data processing. • Utilized task queues and caching with Huey, Redis, and Celery to manage asynchronous transcription workloads and improve performance. • Deployed asynchronous services using Uvicorn behind NGINX for secure, scalable, and production-ready ASGI architecture.

AI/Web developer

Care Innovations • Part-time

Jun 2023 - Sep 2023 • 3 mos

• Spearheaded initial development of “Block Fund” (later my FYP), a blockchain crowdfunding platform, focusing on its Smart Contracts module. • Developed and tested a specialized cryptography module within an application for a Central Bank Digital Currency (CBDC) proof-of-concept, focusing on secure data handling. • Collaborated with senior developers on implementing and refining cryptographic protocols for the CBDC project, ensuring adherence to security best practices.